Observation 75133: Xanthoconium purpureum Snell & E.A. Dick
When: 2011-09-02
No herbarium specimen
0 Sequences

Im naming this clustered bolete that may or may not be parasitized X purpureum because of its strange contorted and overblown shape. I encounter this a couple of times a year though not to this size.
There were yellow pores, and a mild taste. I did not have ammonia on me, which would have helped much, only KOH in which I got a red reaction on cap and orangered on stipe

Proposed Names

28% (1)
Recognized by sight: Greenish tubes suggest Boletus

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I agree with Roy
By: I. G. Safonov (IGSafonov)
2011-09-02 13:25:36 PDT (-0700)

Upon a careful examination of the pics, the tubes do appear green — not ochraceous yellow or yellow-brown as they should be in mature Xanthoconiums — meaning that this bolete should rather belong in the Boletus genus. The stipe in the last pic looks streaky vinaceous-brown, but I’m not sure what to make of that though.

By: Roy Halling (royh)
2011-09-02 12:29:41 PDT (-0700)

of the hymenophore in 2nd image would make me back away from comfortably calling this obs a Xanthoconium. X. purpureum has been up in the NYBG in the past week, tho’.

Damon Brunette,
By: I. G. Safonov (IGSafonov)
2011-09-02 11:12:12 PDT (-0700)

These malformed (or aborted) and/or hypomicized boletes are likely to be a Xanthoconium species, which in my experience is a quite common occurrence for this genus. What about odor — did they stink like fish? As far as the species name is concerned, these could be X. affine rather than purpureum b/c the former are much more common. You are brave to actually taste these — I would never do that and would also be wearing gloves and a face mask. :D

By: Roy Halling (royh)
2011-09-02 10:41:04 PDT (-0700)

will turn X. purpureum turquoise/blue green as well, at least in the Bronx!

I.G. need input..
By: damon brunette (damonbrunette)
2011-09-02 10:15:52 PDT (-0700)

Created: 2011-09-02 10:08:22 PDT (-0700)
Last modified: 2011-09-02 13:26:45 PDT (-0700)
Viewed: 61 times, last viewed: 2017-06-09 18:15:50 PDT (-0700)
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